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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Epidemiol Methods. 2016 Jan 23;5(1):93–112. doi: 10.1515/em-2015-0007

Figure 4.

Figure 4

The analysis of Figure 3 repeated assuming average causal necessity for the X = 1 subgroup instead of the X = 0 subgroup, VE(t = 39, v = 0|s1 = 0, x = 1) = 0, under which the estimated curves VE^(t=39,v=0∣s1=0,x) are steeper in s1 (stronger effect modification).